环境说明：

[root@hadp-master sbin]# hadoop version Hadoop 2.7.4

一、 脚本封装全部一起启动、关闭

1.1 启动 [root@hadp-master sbin]# ./start-all.sh  This script is Deprecated. Instead use start-dfs.sh and start-yarn.sh Starting namenodes on [hadp-master] hadp-master: starting namenode, logging to /usr/local/hadoop/hadoop-2.7.4/logs/hadoop-root-namenode-hadp-master.out hadp-node2: starting datanode, logging to /usr/local/hadoop/hadoop-2.7.4/logs/hadoop-root-datanode-hadp-node2.out hadp-node1: starting datanode, logging to /usr/local/hadoop/hadoop-2.7.4/logs/hadoop-root-datanode-hadp-node1.out Starting secondary namenodes [0.0.0.0] 0.0.0.0: starting secondarynamenode, logging to /usr/local/hadoop/hadoop-2.7.4/logs/hadoop-root-secondarynamenode-hadp-master.out starting yarn daemons starting resourcemanager, logging to /usr/local/hadoop/hadoop-2.7.4/logs/yarn-root-resourcemanager-hadp-master.out hadp-node2: starting nodemanager, logging to /usr/local/hadoop/hadoop-2.7.4/logs/yarn-root-nodemanager-hadp-node2.out hadp-node1: starting nodemanager, logging to /usr/local/hadoop/hadoop-2.7.4/logs/yarn-root-nodemanager-hadp-node1.out 说明：启动所有的Hadoop守护进程。包括NameNode、DataNode、 Secondary NameNode、Yarn、 Yarn-root-nodemanager

1.2 关闭

[root@hadp-master sbin]# ./stop-all.sh  This script is Deprecated. Instead use stop-dfs.sh and stop-yarn.sh Stopping namenodes on [hadp-master] hadp-master: stopping namenode hadp-node2: stopping datanode hadp-node1: stopping datanode Stopping secondary namenodes [0.0.0.0] 0.0.0.0: stopping secondarynamenode stopping yarn daemons stopping resourcemanager hadp-node2: no nodemanager to stop hadp-node1: no nodemanager to stop no proxyserver to stop 说明：关闭所有的Hadoop守护进程。包括NameNode、DataNode、 Secondary NameNode、Yarn、resourcemanager

二、模块封装启动、关闭

2.1 启动 [root@hadp-master sbin]# ./start-dfs.sh  Starting namenodes on [hadp-master] hadp-master: starting namenode, logging to /usr/local/hadoop/hadoop-2.7.4/logs/hadoop-root-namenode-hadp-master.out hadp-node1: starting datanode, logging to /usr/local/hadoop/hadoop-2.7.4/logs/hadoop-root-datanode-hadp-node1.out hadp-node2: starting datanode, logging to /usr/local/hadoop/hadoop-2.7.4/logs/hadoop-root-datanode-hadp-node2.out Starting secondary namenodes [0.0.0.0] 0.0.0.0: starting secondarynamenode, logging to /usr/local/hadoop/hadoop-2.7.4/logs/hadoop-root-secondarynamenode-hadp-master.out 说明：启动Hadoop HDFS守护进程NameNode、DataNode、SecondaryNameNode

[root@hadp-master sbin]# ./start-yarn.sh 

starting yarn daemons starting resourcemanager, logging to /usr/local/hadoop/hadoop-2.7.4/logs/yarn-root-resourcemanager-hadp-master.out hadp-node2: starting nodemanager, logging to /usr/local/hadoop/hadoop-2.7.4/logs/yarn-root-nodemanager-hadp-node2.out hadp-node1: starting nodemanager, logging to /usr/local/hadoop/hadoop-2.7.4/logs/yarn-root-nodemanager-hadp-node1.out 说明：启动yarn daemons、yarn-root-resourcemanager、yarn-root-nodemanager

2.2 关闭

[root@hadp-master sbin]# ./stop-dfs.sh Stopping namenodes on [hadp-master] hadp-master: stopping namenode hadp-node2: stopping datanode hadp-node1: stopping datanode Stopping secondary namenodes [0.0.0.0] 0.0.0.0: stopping secondarynamenode 说明：停止Hadoop HDFS守护进程NameNode、DataNode、SecondaryNameNode

[root@hadp-master sbin]# ./stop-yarn.sh 

stopping yarn daemons stopping resourcemanager hadp-node1: no nodemanager to stop hadp-node2: no nodemanager to stop no proxyserver to stop 说明：关闭yarn daemons、yarn-root-resourcemanager、nodemanager

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